Comodo vs PeerBlock – firewall comparison


comodo firewall vs peerblock firewall


Comodo vs PeerBlock: a Firewall Comparison

Comparing different firewalls and their features and functionality can help you find the best Internet security software for your computer. To that end, today we are going to compare Comodo vs PeerBlock to help you find the software that fulfills your needs.

Having a trustworthy firewall is a must-have for any computer that is connected to the Internet. A firewall is a security system that monitors incoming and outgoing traffic of the network and blocks any data that is considered dangerous or unauthorized according to its security rules. A firewall can be hardware, software, or a combination of both.

Comodo is one of the most well-known and well-liked general-purpose software firewalls out there, while PeerBlock is a popular software firewall mainly optimized for peer-to-peer file-sharing networks. So, the two firewalls are obviously very different. With that in mind, in this Comodo vs PeerBlock comparison, we review each firewall, and compare a few of their characteristics.


PeerBlock is a fork of PeerGuardian, a free and open-source program that was initially released by Phoenix Labs (formerly Methlabs) in 2003. PeerGuardian is a personal firewall optimized for file-sharing networks. In 2009, a small team of developers led by Mark Bulas developed PeerBlock. PeerBlock 1.0 is based on the same code as PeerGuardian 2 RC1 Test3 Vista version. When the Windows version of PeerGurdian was discontinued, Phoenix Labs encouraged its users to migrate to PeerBlock which is now considered the Windows successor to PeerGuardian.

It’s worth mentioning that the latest version of PeerBlock was released in 2014 and it has not had any new version in the past six years, so some people believe PeerBlock is discontinued.

Comodo Security Solutions, Inc. was founded by Melih Abdulhayoğlu, an electronics engineer and entrepreneur in 1998, in Bradford, UK. The cybersecurity company relocated to the US in 2004 and is now headquartered in Clifton, New Jersey, in the United States. Comodo Security Solutions, Inc. is a part of the Comodo Group, which also has a company that provides managed DNS services and a company that issues SSL and other digital certificates.

comodo firewall ui

Price and platform compatibility

PeerBlock is free and open-source, but you may need to pay some money if you would like to access its updated blocklists. PeerBlock is hard-coded to use I-Blocklist, a website that used to support unlimited free list updating. But as of September 2013, I-Blocklist limited access to its updates to once a week, except for its paid subscribers. Two years later, I-Blocklist stopped offering free updates for blocklists, entirely.

In late 2017, started providing Peerblock and Peerguardian users with free blocklists against malicious hosts and ad-servers. But since 2019, the website charges a monthly subscription fee to gain access to all blocklists. That being said, remember that you can also create your own IP address range to block, so you can use PeerBlock without having access to its updated blocklists.

Comodo offers a free, but limited, edition of its Internet security product, including a free personal firewall as well as a free antivirus program. But if you want to get your hands on their whole packages with all the features and options, you need to purchase a license. 

PeerBlock firewall can be used on most versions of Microsoft Windows such as Windows XP, Windows Vista, Windows Server 2008, Windows 7, and Windows 10. PeerBlock 1.2 firewall could run as a portable software. So it does not need to be installed on a computer to run and does not store data on the system.

Comodo has antivirus applications for Windows, macOS, and Linux, but the Comodo firewall can only be installed on Windows 10, Windows 7, Windows 8, Vista, and XP.  Comodo also has a free mobile security application for iOS and Android, which offers malware detection, VPN, ID protection, safe browsing, AppLock, SD Card protection, and cloud scanning.

So platform-wise, in the Comodo vs PeerBlock race, the first one is more successful.

comodo firewall rules

Comodo, a comprehensive firewall for beginners and advanced users

Comodo Internet security tool is a comprehensive Internet security package with many basic and advanced features that can be used by a wide range of users. For example, unlike PeerBlock, Comodo provides users with an antivirus as well as a Host Intrusion Protection System (HIPS) protection. HIPS is a security component that always monitors system activity and stops any process that tries to modify important files or interfaces.

Some other features provided by Comodo include application sandboxing, Zero-Day Protection, default and customized firewall rulesets, and kill switch to stop or block problematic processes.

Comodo also offers some web protection and email security features in its Internet security package. For example, it has an anti-spam feature as well as a free Firefox-based web browser called IceDragon. Comodo's SiteInspector malware detection system is integrated into IceDragon. Besides, Comodo offers a Secure Shopping tool that allows users to safely explore the Internet and run programs from within a security-hardened virtual environment.

In terms of trust policy, Comodo has a very strict approach that roots in Comodo’s belief in Zero Trust Security. It means every application is denied access until they are verified by Comodo. This policy has resulted in the creation of Comodo’s Default Deny Protection (DDP). Per DDP, instead of keeping a list of known malware and viruses to decide which applications and files cannot be trusted, like many firewalls do, Comodo firewall uses a list of over two million known PC-friendly applications. So, if a file that is not on this safe-list tries to access your computer, Comodo immediately alerts you to inform you about the possibility of an attack. The problem with the usual approach is that if the list of dangerous files is incomplete or out-of-date, the computer is defenseless. But the Comodo’s special approach solves this problem, masterfully.

PeerBlock, an IP blocking firewall for file-sharing networks

Rather than a traditional general-purpose firewall, PeerBlock is an advanced IP blocking utility that can be especially helpful for heavy torrent users. PeerBlock’s main function is to block incoming and outgoing connections to and from specific IP addresses and IP ranges. It has a default built-in list of IP addresses, including some government-related websites, anti-P2P organizations, educational institutions, and universities, as well as many known troublemaking and malicious websites. You can create your own blocklist to block, too. You can even block entire countries, if you’d like to. PeerBlock also blocks most ads, by default.

The first time that you run PeerBlock, a wizard helps you through configuring your preferences which of course, can be changed later. For example, you should specify what you intend to block, in the beginning. There's also the “Always Allow HTTP” option that you can check to always enable connections over ports 80 and 443 of your system, even if they're on your blocklist. These two ports are generally associated with the Internet and web browsing, but other applications may need to access them, too.

As another option, PeerBlock users can choose to turn on or turn off both IP and HTTP trackers. PeerBlock also creates a log showing the time, source, IP address, destination, and protocol of the tracker.

peerblock graphic


Comodo vs PeerBlock: Which firewall is best for you?


  • Some people may feel confused by Comodo’s many options and features but Comodo is quite easy to use, even for beginners. Of course, if you are an advanced user you can take much more from it, for instance, by creating your custom rulesets. In contrast, PeerBlock is not for everyone. It is designed to be effective at monitoring and blocking IP addresses and is mainly used by heavy torrent users. PeerBlock does have a helpful “wizard” that can help you through the process, so you do not have to be particularly tech-savvy, but you need a basic understanding of IP addresses to use it, at least.
  • Unlike Comodo, PeerBlock is open-source, so familiar with coding may enjoy altering and enhancing its code according to their desire and needs.
  • Both Comodo and PeerBlock offer automatic updates.
  • PeerBlock uses a very low amount of system resources, such as CPU and RAM. Comodo is a very efficient program, but it has so many features that make it more likely to need more system resources.


Mainly used by torrenters, PeerBlock is a personal firewall that can help you control who your computer talks to on the Internet. Comodo offers a big firewall and antivirus package that offers many useful options and features for many users, whether beginner or advanced. So picking your firewall of choice in the Comodo vs PeerBlock battle shouldn’t be difficult for you.

However, to make a final decision, you probably need to compare more firewalls. We have compared some other software firewalls such as ZoneAlarm, Outpost , GlassWire and TinyWall in our previous posts. Make sure to check them out.


Published by Blogger at 2020 May 19